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A self-consistent renormalization (RG) scheme has been applied to nonhelicalmagnetohydrodynamic turbulence with normalized cross helicity $\sigma_c =0$ and$\sigma_c \to 1$. Kolmogorov's 5/3 powerlaw is assumed in order to compute therenormalized parameters. It has been shown that the RG fixed point is stablefor $d \ge d_c \approx 2.2$. The renormalized viscosity $\nu^*$ and resistivity$\eta^*$ have been calculated, and they are found to be positive for allparameter regimes. For $\sigma_c=0$ and large Alfv\'{e}n ratio (ratio ofkinetic and magnetic energies) $r_A$, $\nu^*=0.36$ and $\eta^*=0.85$. As $r_A$is decreased, $\nu^*$ increases and $\eta^*$ decreases, untill $r_A \approx0.25$ where both $\nu^*$ and $\eta^*$ are approximately zero. For large $d$,both $\nu^*$ and $\eta^*$ vary as $d^{-1/2}$. The renormalized parameters forthe case $\sigma_c \to 1$ are also reported.Comment: 19 pages REVTEX, 3 ps files (Phys. Plasmas, v8, 3945, 2001

Calculation of renormalized viscosity and resistivity in magnetohydrodynamic turbulence